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Added randomization of the galaxies direction

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This commit is contained in:
Guilhem Lavaux 2014-10-10 12:04:43 +02:00
parent d58c617e63
commit 857b5dc95d
1 changed files with 8 additions and 4 deletions
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10
python_sample/build_dipole_ksz_from_galaxies.py
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@ -38,7 +38,7 @@ def build_unit_vectors(N):
return ux,uy,uz
def generate_from_catalog(dmin,dmax,Nside):
def generate_from_catalog(dmin,dmax,Nside,do_random=False):
import progressbar as pbar
cat = np.load("2m++.npy")
@ -55,8 +55,11 @@ def generate_from_catalog(dmin,dmax,Nside):
ksz_mask = np.ones(Npix, dtype=np.uint8)
for i in pbar.ProgressBar(maxval = cat.size, widgets=[pbar.Bar(), pbar.ETA()])(cat):
if do_random:
l = np.random.rand()*360
b = np.arcsin(2*np.random.rand()-1)*90/np.pi
else:
l,b=i['gal_long'],i['gal_lat']
ra,dec=i['ra'],i['dec']
l=ne.evaluate('l*deg2rad')
b=ne.evaluate('b*deg2rad')
@ -100,6 +103,7 @@ def get_args():
parser.add_argument('--base_fig', type=str, default="kszfig.png")
parser.add_argument('--build_dipole', type=bool, default=False)
parser.add_argument('--degrade', type=int, default=-1)
parser.add_argument('--random', type=bool, default=False)
return parser.parse_args()
def main():
@ -112,7 +116,7 @@ def main():
print("Generating map...")
proj,mask = generate_from_catalog(args.depth_min,args.depth_max,args.Nside)
proj,mask = generate_from_catalog(args.depth_min,args.depth_max,args.Nside,do_random=args.random)
if args.degrade > 0:
proj *= mask